what is the meaning of a domino?
A domino is a small tile used in a board game of the same name. It is rectangular-shaped with a number of dots or pips (usually 1 to 6) on each side. The game involves placing the tiles in a line, with the aim of making them all fall down The game of dominoes was invented in China in the 12th century and was brought to Europe in the 18th century.